I have a ten month old male Boxer and I'm about to get a 9 week old boxer female. I've never been in a situation like this. If anyone can give me some advice on how to handle the dogs together (My male Boxer is a friendly psycho!) please help out!
I'm also wondering about how long I should wait before I breed them.
It is best to introduce them on neutral ground. This way your current dog won't get territorial. Or at the very least, not in the house, in the yard. Let them play, but supervise to make sure it doesn't get too rough. You shouldn't have a problem if your male is normally happy to play with other dogs.
On the breeding issue, if you don't mind, I'm going to just copy & paste what I wrote in a previous thread.
Posted: 7:26:57 PM 3/11/2008 1 yr is too young. They may be physically ready, but not emotionally mature enough. It is like getting a 12-yr-old girl pregnant. You know someone else is going to be the primary caretaker. It is the same in dogs. You are more apt to lose pups and/or having to supplement or bottle feed.
That is the practical side. Here is the ethical side. If you want to be a responsible, ethical breeder; you'll have to wait until they are at least 2 yrs old. This is b/c you can't test for many of the diseases until then. It is more ethical to wait and get your dog tested. We don't want to be putting sick puppies into the world for some shelter to deal with, do we?
In the meantime, you can work on a title for your dog. Conformation, obedience, Rally, whatever your dog was bred for! It is fun, and will give you a network of puppy buyers and breeders to work with. I do not think a title is the end all, though. There are many dogs that have amazing breed type, but do not show well for whatever reason. I know in my breed (Siberian Husky) the AKC does not give titles for Working Sled dog or pack dog. Only the Siberian Husky Club of America does.
So there it is... I have yet to breed my dogs. I'm working on getting them finished (champion) in conformation, and seeing how they work in harness to prove their worth first. I've been involved with my breed for over 10 yrs, and researching pedigrees and breeding practices for the last 2-3 yrs so I would know what I was talking about/going for in my lines. A responsible breeder is very patient!
Good luck! I hope you do the right thing.
Edit: Forgot to mention that you should not breed a bitch past the age of 6 or 7, and a dog will start to have less motility after that. They should enjoy their retirement!